This is one of the best Rule of Law effects for creature-heavy decks because you arent bound by any restrictions when casting creature spells, but its devastating against decks that rely heavily on combos requiring multiple noncreature spells in the same turn
You should strongly consider it if your deck is mono-black, mostly black, or needs black sources while still wanting extra removal
Its a little more niche in my opinion
There are also a couple one-off elder dragons: Modern Horizons 2 printed Piru, the Volatile as the first wedge tri-color elder dragon, and Final Fantasy Commander brought us Hraesvelgr of the First Brood
Accessories like card sleeves and binders
Basically, no matter what mode you choose you get your 5 manas worth or more, and the modality is great